AEI Systems is a highly focused, world-leading defence organisation with BS EN ISO 9001:2008 quality approval, specialising in the design, development, manufacture, test, supply and logistic support of Air, Land and Naval weapons and weapons systems. AEI Systems is the Design Authority (DA) for ADEN, ASPEN and INSPEKTA. AEI Systems refurbishes HS804 and M39 guns and specialises in gun barrel manufacture ranging from 20 mm to 105 mm calibre. Working from a modern office and factory complex in Ascot, Berkshire, AEI Systems is conveniently located close to the M3, M4 and M25 motorways and London Heathrow airport. Utilising modern Computer Aided Design (CAD), Simulation, Project Data Management (PDM) and Enterprise Content Management (ECM) systems. AEI Systems responds promptly to customer demands for new and innovative solutions and delivers new and ‘off the shelf’ products in a timely manner. .